Shirin and Shoes

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Shirin and her sister Doodi visited a mall to buy some shoes , but seeing a sale they got excited and brought $N$ shoes so that they can distribute it among their $K$ friends. You can give any friend a pair of shoes if both the shoes are of the same type. A valid distribution is when no friend has 2 pairs of the same type. You can not give any of your friends' a single shoe. You are given a

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solution.cppC++17

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